Improvement of the Electro-Optical Process in GaAs for Terahertz Single Pulse Detection by Using a Fiber-Coupling System

The electro-optical process is a popular method for terahertz radiation detection. Detectors based on the electro-optical process have large bandwidth, and the signal-to-noise ratio (SNR) is relatively high. Further, this detector can be applied to detect high-power signals without using radiation a...

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Bibliographic Details
Published in:Applied sciences 2021-08, Vol.11 (15), p.6859
Main Authors: Yahya, Adnan Haj, Balal, Nezah, Klein, Avi, Gerasimov, Jacob, Friedman, Aharon
Format: Article
Language:English
Subjects:
Attenuation
cross-polarization
Crystals
Electric fields
electro-optic detection
Electromagnetism
fiber-coupling
GaAs crystal
Lasers
Methods
Noise
Optical communication
Optics
Radiation
Sensors
Signal processing
Signal to noise ratio
THz pulse
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Summary:The electro-optical process is a popular method for terahertz radiation detection. Detectors based on the electro-optical process have large bandwidth, and the signal-to-noise ratio (SNR) is relatively high. Further, this detector can be applied to detect high-power signals without using radiation attenuation. This paper presents a method to improve the electro-optic process to THz radiation detection based on GaAs crystals by coupling the optical output signal into fiber. Results demonstrated an improvement in the signal-to-noise ratio that means an increase in the dynamic range of the electro-optical detector.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11156859